Pump won't pump

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Bunkedbed
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Joined: Tue 21 Jun, 2022 18:08
My Pool: 4ft deep, 18ft diameter circular above-ground with pump and sand filter.

Pump won't pump

Postby Bunkedbed » Tue 21 Jun, 2022 18:28

Hey, I'm hoping you kind souls can help me out with an issue I've been trying to tackle for a while now - opening the pool.

My setup is an 18ft diameter by 4ft deep above-ground pool with a 1 HP pump and large sand filter. The equipment came with the house but I suspect it's oversized. It was working fine when I got the place in October. The only 'major' change I made was swapping a leaking 5-way valve on the sand filter and cutting out a softener-type setup (had a rig with buttons and a piece of pipe with a chamber but it had not been used recently)

My issue right now is that the pump will no longer run, it just buzzes when plugged in. I had just added some sand to the filter (long story - basically had extra sand from trying to downsize the equipment). And it was working fine with lots of pressure but after 30min the cord had melted one side of my extension cord and the motor was very hot so I unplugged it. It doesn't seem to be seized as I can spin from the back end.

Any suggestions for getting it running again and what might have caused it?


Teapot1
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Posts: 517
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Pump won't pump

Postby Teapot1 » Wed 22 Jun, 2022 01:38

The first thing I would suggest is seeing where your nearest motor rewind shop is so they can test it. It could be as simple as a failed start run capacitor ( condenser) a cheap part that is easily replaced. But if if sat trying to run and got hot it could have damaged (overheated ) the windings and caused an internal short.
I may not give you the answer you want to hear, but I will give an honest opinion of your situation as you decribe it.
Bunkedbed
I'm new here
I'm new here
Posts: 4
Joined: Tue 21 Jun, 2022 18:08
My Pool: 4ft deep, 18ft diameter circular above-ground with pump and sand filter.

Re: Pump won't pump

Postby Bunkedbed » Wed 22 Jun, 2022 18:55

Thanks for the reply and suggestions,

When I last turned it off, the pump was running seemingly fine with high jet pressure. I checked the capacitor and I’m getting a steady 8.4 ohms. Is it safe to say it needs to be replaced?

Also, if I can get it running, how could I prevent it from burning out the capacitor again?
Teapot1
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 517
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Pump won't pump

Postby Teapot1 » Thu 23 Jun, 2022 03:30

I see your biggest issue is the pump being 1hp for such a small pool, it is just not necessary. It will be straining the motor, costing you a lot in electricity and achieves less in terms of filtration. Buy a speed controller,
Add a flow meter wind filtration speed down. You only need the power for backwashing.
I may not give you the answer you want to hear, but I will give an honest opinion of your situation as you decribe it.
Bunkedbed
I'm new here
I'm new here
Posts: 4
Joined: Tue 21 Jun, 2022 18:08
My Pool: 4ft deep, 18ft diameter circular above-ground with pump and sand filter.

Re: Pump won't pump

Postby Bunkedbed » Thu 23 Jun, 2022 16:10

Ah gotcha. For my own knowledge, is the strain due to the sand filter, plumbing, or something else?

If I were to continue with this pump, what speed controller/flow meter would you recommend as an economic option? I tried to look for one but having some trouble.

On the other hand, if I were to pickup a new pump - what size pump would fit my pool better? (1-1/2" plumbing)
Teapot1
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 517
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Pump won't pump

Postby Teapot1 » Thu 23 Jun, 2022 17:08

I dont know whats available to you in your area but try googling cleverpool speed controller or a single phase VFD should give you some pointers. Should save the money in a season. FlowViz are very easy to mount flow gauges.
A 1/2 hp would do but on filtration you really dont need much. My pool is 0.08hp in filtration, around 60w on a 12000 gallon pool, whereas you are 1200 w?

https://www.poolwarehouse.uk.com/index. ... gK0CPD_BwE
I may not give you the answer you want to hear, but I will give an honest opinion of your situation as you decribe it.
Bunkedbed
I'm new here
I'm new here
Posts: 4
Joined: Tue 21 Jun, 2022 18:08
My Pool: 4ft deep, 18ft diameter circular above-ground with pump and sand filter.

Re: Pump won't pump

Postby Bunkedbed » Tue 28 Jun, 2022 18:50

In Canada I'm having trouble finding that one. I found some single phase VFDs on amazon but I'm really not finding much otherwise, maybe not looking in the right places. Nothing I found seems to resemble the cleverpool product either. I may just bite the bullet and size down the pump to 1/2 HP.

Still not sure how it all of a sudden burned out the first time I ran it, the previous owner had used it at least a whole season without issues. I'm still thinking there could be an issue with the sand filter. Can sand filters be "overfilled" to the point of causing the pump to work extra, or maybe the replacement valve is causing it to overwork?
Teapot1
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 517
Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Pump won't pump

Postby Teapot1 » Wed 29 Jun, 2022 01:29

The clever pool is a look on its own compared to the usual VFD. Have you looked at ABB or Invertek?
Yes sand filters can be overfilled, whilst they need a good bed depth for filtration there also needs sufficient freeboard for sand bed expansion during backwash. This often means excess sand is discharged during backwash which can clog the multiport valve.
I may not give you the answer you want to hear, but I will give an honest opinion of your situation as you decribe it.

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